Gun sight



Patented Apr. 17, 19 45 UNITED STATES PATENT OFFICE GUN SIGHT Harry Trask, New York, N. Y.

Application June 2.6, 1943, Serial No. 492,381

3 Claims.

The present invention relates to gun sights and while particularly useful for rifles is not limited thereto, but is applicable as well to machine guns, shot guns and the like.

It is noted that the front sight of a rifle or machine gun must be dark for clear delineation thereof in day light use. Such dark sight becomes nearly invisible when the gun is used at night or under conditions of poor illumination, so that accurate aim becomes impossible.

It is, accordingly, among the objects of the invention to provide a simple, compact, inexpensive unitary attachment, which may be instantly applied to a conventional rifle, machine gun or the like for use in the dark and which will afford an accurately positioned front sight clearly visible to the gunner and yet effectively concealed from the live target and from the enemy generally.

In the accompanying drawing in which is shown one of various possible embodiments of the several features of the invention,

Fig. 1 is a side elevation of a rifle showing the attachment in place thereon,

Fig. 2 is a view in longitudinal cross-section showing the attachment in place in association with the neighboring parts of the gun,

Fig. 3 is a transverse sectional view taken on line 33 of Fig. 2,

Fig. 4 is a plan view of the assembly shown in Fig. 2, and

Fig. 5 i a perspective view of the attachment, with part of the hood broken away.

Referring now to the drawing, the conventional rifle illustratively shown includes the barrel ID with its associated conventional peep and battle sights II close to the stock 12. The front of the barrel has the conventional front sight F, which ordinarily comprises a cylindrical clamp l3 permanently keyed at l4 about the front end of the barrel, a block l5 unitary therewith rising from said clamp. From said block rise lateral wings l6 which are open or of U-shape for admission of light to the upstanding sight fin I! which is unitary with a key l8 fitting in a transverse keyway IS in the block I 5 and between the roots of said wings. In ordinary practice, the sight fin fitting is black, to be clearly outlined to the gunner when used in the day time or under illumination.

Releasably and removably associated with the foregoing conventional construction is the luminous sight attachment of the present fiimion.

taehment comprises a unitary fitting A which desirably consists of a metal block 20 conformed at its lower end as a cylindrical clip, the arced jaw 2| of which are extended as resilient legs 22 formed by slotting the block as at 23.

Rising from the block is a median fin 24 to be aligned with the fin ll. Fin 24 bears a mark of luminous paint 25 to render it visible to'the gunner. Means is, however, preferably provided substantially to confine such visibility to the gunner, and effectively to conceal the luminous area from the target or the enemy. To this end, there is preferably formed unitary with the upper part of the block a hood comprising lateral walls 26 rising from the block and which flank fin 24, and a roof 21 unitary with and across th tops of said lateral walls.

Preferably the forward edge of fin 24, that is, the edge nearest the gunner is wholly within the hood, as best shown in Fig. 4 and the mark 25' of luminous paint upon the fin i near said edge. Thus, there is attained a maximum of visibility to the gunner, and best concealment from the enemy or target.

The luminous fin 24 desirably rises from a metal plate 28 snugly fitting between the lateral walls 26 and welded thereto. D'esirably, the root 29 of the fin 24 is lodged in a corresponding groove in the block 20 and the base 28 comprises a pair of horizontal plates 28a resting upon and welded to the floor of the hood 26, 21. Both plates 28a and the fin 24 protrude beyond one face of the fitting to form a key 30 best shown in Fig. 5. The root of the fin is cut away to extend flush with the lower face of the protruding length of flanking plates 28a. as shown.

For use of the gun, the gunner simply snaps the lower clip end 2| of the attachment of Fig. 5 in place over the barrel of the gun and then slides said attachment longitudinally of the barrel for the key 30 to enter and be lodged snugly between the wings 26 of the fixed sight. Inasmuch as the floor of the fixed conventional sight slopes downward to the left as shown in Fig, 2, the key base 280. is bevelled at 3| at its lower face for snug coaction with said sloping floor. Accordingly, the luminou front sight attachment will be securely mounted and accurately keyed for alignment of its sight fin 24 with the fixed sight fin H.

In use, the luminous fin 24 will be clearly visible to the gunner in the dark, to facilitate aim as accurate as in the daytime. The walls 26 and roof 2! of the hood confine visibility of the luminous fin substantially to the gunner, and effectively conceal it from view of the target as well a of the enemy generally. The auxiliary sight attachment with its luminous paint marked sight fin 24 is quite as inconspicuous to the target and enemy in the dark, as is the standard fixed black from; sight in the daytime.

The luminous sight feed attachment is readily removed from the gun barrel and would preferably not be used in the daytime, since its bright luminous paint mark would impair clear delineation thereof in daytime use of the gun.

As many changes could be made in the above construction and many apparently widely different embodiments of this invention could be made without departing from the scope of the claims, it is intended that all matter contained in the above description or shown in the accompanying drawing, shall be interpreted as illustrative and not in a limiting sense.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent of the United States is:

1. An auxiliary gun sight attachment comprising a fitting including a resilient clip, a hood unitary therewith and rising therefrom, aiuminous sight fin rising from the floor of said hood, and means protruding beyond one face of said fitting for keying connection between the wings of a fixed front sight.

2. An auxiliary gun sight comprising a unitary fitting including a block of metal having a unitary cylindrical clip at its lower end to embrace a gun barrel, said block being longitudinally slit to impart the clip resilience, said block having a hood at its upper part with a floor, side walls and a roof, a luminous sight fin rising from said block and within said hood, and means protruding from one face of the block for keying connection between the lateral Wings of a fixed front sight of a gun.

3. A gun sight attachment comprising a block of metal presenting a resilient clip at the lower end thereof for snapping upon a gun barrel and presenting a unitary rectangular hood at the upper part thereof with side Walls and a roof, a sight fin unit comprising a normally horizontal rectangular plate and an upstanding median fin rising therefrom, said unit being fixed upon the base of said hood, said plate protruding beyond one face of said fitting, the protruding end of said plate being bevelled at its lower face, the upper face of said fin having a portion thereof coated with luminous paint.

HARRY TRASK. 

